<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>云构建服务</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap" rel="stylesheet">
    <style>
        :root {
            --oh-blue: #007DFF;
            --oh-blue-light: #4DA3FF;
            --oh-amber: #FFAA00;
            --oh-amber-light: #FFCC40;
            --oh-amber-dark: #E69500;
            --oh-gray-dark: #1a1a2e;
            --oh-gray: #4a4a6a;
            --oh-gray-light: #f0f4f8;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            background: var(--oh-gray-dark);
            overflow: hidden;
            position: relative;
        }

        /* 动态背景 */
        .bg-pattern {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            background: 
                radial-gradient(ellipse at 20% 20%, rgba(255, 170, 0, 0.1) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 80%, rgba(255, 170, 0, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(255, 170, 0, 0.05) 0%, transparent 70%);
        }

        /* 网格线背景 */
        .grid-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            background-image: 
                linear-gradient(rgba(255, 170, 0, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 170, 0, 0.02) 1px, transparent 1px);
            background-size: 60px 60px;
        }

        /* 浮动光点 */
        .floating-dots {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 2;
            pointer-events: none;
        }

        .dot {
            position: absolute;
            width: 4px;
            height: 4px;
            background: var(--oh-amber);
            border-radius: 50%;
            opacity: 0.4;
            animation: pulse 4s ease-in-out infinite;
        }

        .dot:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; }
        .dot:nth-child(2) { left: 20%; top: 80%; animation-delay: 0.5s; }
        .dot:nth-child(3) { left: 80%; top: 30%; animation-delay: 1s; }
        .dot:nth-child(4) { left: 70%; top: 70%; animation-delay: 1.5s; }
        .dot:nth-child(5) { left: 90%; top: 50%; animation-delay: 2s; }

        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 0.4; }
            50% { transform: scale(1.8); opacity: 0.8; }
        }

        /* 主容器 */
        .container {
            position: relative;
            z-index: 10;
            background: rgba(255, 255, 255, 0.98);
            border-radius: 24px;
            padding: 48px 56px;
            max-width: 520px;
            width: 90%;
            text-align: center;
            box-shadow: 
                0 4px 24px rgba(255, 170, 0, 0.12),
                0 20px 60px rgba(0, 0, 0, 0.2);
            animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
            border: 1px solid rgba(255, 170, 0, 0.1);
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 顶部装饰线 */
        .container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--oh-amber), var(--oh-amber-light));
            border-radius: 0 0 4px 4px;
        }

        /* 图标区域 */
        .icon-wrapper {
            margin-bottom: 24px;
            animation: fadeIn 0.6s ease 0.3s both;
        }

        .icon-circle {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--oh-amber), var(--oh-amber-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto;
            box-shadow: 0 8px 24px rgba(255, 170, 0, 0.3);
        }

        .icon-circle svg {
            width: 40px;
            height: 40px;
            stroke: white;
            stroke-width: 2.5;
            fill: none;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 标题 */
        .title {
            font-size: 26px;
            font-weight: 700;
            color: var(--oh-gray-dark);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            animation: fadeIn 0.6s ease 0.4s both;
        }

        /* 错误代码标签 */
        .error-code {
            display: inline-block;
            background: rgba(255, 170, 0, 0.1);
            color: var(--oh-amber-dark);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            animation: fadeIn 0.6s ease 0.5s both;
        }

        /* 分割线 */
        .divider {
            width: 60px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--oh-amber), transparent);
            margin: 0 auto 24px;
            animation: fadeIn 0.6s ease 0.5s both;
        }

        /* 信息文字 */
        .message {
            font-size: 15px;
            color: var(--oh-gray);
            line-height: 1.8;
            margin-bottom: 28px;
            animation: fadeIn 0.6s ease 0.6s both;
        }

        /* 按钮 */
        .back-btn {
            display: inline-block;
            padding: 12px 32px;
            background: linear-gradient(135deg, var(--oh-blue), var(--oh-blue-light));
            color: white;
            border: none;
            border-radius: 25px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
            animation: fadeIn 0.6s ease 0.7s both;
        }

        .back-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 125, 255, 0.3);
        }

        /* 联系信息 */
        .contact-box {
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid rgba(0, 0, 0, 0.06);
            animation: fadeIn 0.6s ease 0.8s both;
        }

        .contact-box p {
            font-size: 13px;
            color: #999;
            margin: 0;
        }

        /* 响应式 */
        @media (max-width: 480px) {
            .container {
                padding: 36px 28px;
                border-radius: 20px;
            }
            .title {
                font-size: 22px;
            }
            .icon-circle {
                width: 70px;
                height: 70px;
            }
        }
    </style>
</head>
<body>
    <div class="bg-pattern"></div>
    <div class="grid-overlay"></div>
    <div class="floating-dots">
        <div class="dot"></div>
        <div class="dot"></div>
        <div class="dot"></div>
        <div class="dot"></div>
        <div class="dot"></div>
    </div>

    <div class="container">
        <div class="icon-wrapper">
            <div class="icon-circle">
                <svg viewBox="0 0 24 24">
                    <path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"></path>
                    <line x1="12" y1="9" x2="12" y2="13"></line>
                    <line x1="12" y1="17" x2="12.01" y2="17"></line>
                </svg>
            </div>
        </div>
        <h1 class="title">服务暂时不可用</h1>
        <span class="error-code">错误代码: 400</span>
        <div class="divider"></div>
        <p class="message">
            抱歉，当前无法为您分配云构建机器<br>
            可能是机器资源不足或系统暂时繁忙
        </p>
        <button class="back-btn" onclick="window.history.back()">返回上一页</button>
        <div class="contact-box">
            <p>如有问题，请联系系统管理员</p>
        </div>
    </div>
</body>
</html>
